The primary symptom of tipburn of mango leaves is necrotic sections around the leaf edges. It is important to figure out the cause of the condition in order to begin appropriate treatment. Tipburn of mango leaves is often, though not always, caused by one of three conditions.
a. The plant is not getting enough water
b. Salt has accumulated in the soil.
c. A magnesium deficiency is yet another possible cause of this problem.
All can occur at the same time, but either one can result in mango leaves with burnt tips. If you water your plant regularly, you are not likely to see tipburn of mango leaves caused by a moisture deficiency. Usually, sporadic irrigation or extreme fluctuations in soil moisture is the kind of cultural care that results in tipburn. Tipburn caused by fluctuations in moisture can be solved by regularizing irrigation. Set a schedule for watering your plant and stick to it.
Salt Injury: If your plant’s drainage is poor, salt can build up in the soil, causing tipburn of mango leaves. If salt has built up in the soil, try heavy watering to flush salts out from the root zone. If the soil has drainage issues, make drainage channels. Grow sunhemp as green manure crop as intercrop during rainy season and plough back at 50% flowering…This should be practiced atleast 4 to 5 years
Magnesium deficiency: use a foliar spray of compost tea (if organic farmer) potassium chloride KCl 2% (chemical farming). Repeat every two weeks.